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I am getting compatibility errors when I open PDF
files. How do I fix this problem?
You may receive an error message when closing an Internet
Explorer window with a partially loaded PDF document. This error
typically occurs unexpectedly and forces IE to shut down and
appears in one of two ways.
Internet Explorer error message

"Internet Explorer has encountered a problem with an add-on and
need to close. The following add-on was running when this problem
occured: File: pdf.ocx; Company Name: Adobe Systems, Incorporated;
Description: Adobe Acrobat Control for ActiveX".
Windows (pdf.ocx) application error message

After the above message, Windows may show error message box:
"iexplore.exe - Application Error. The instruction at "0x043cf5db"
referenced memory at "0x00000000". The memory could not be "read".
Click on OK to terminate the program. Click on CANCEL to debug the
program".
This errors occurs on different versions of Windows and Internet
Explorer and happens due to incompatibility issues between Adobe's
ActiveX controls in Internet Explorer (pdf.ocx ) and third party
plug-ins, such as the WRA Toolbar.
The Fix
To fix this problem, you will need to tell Adobe Acrobat to open
PDF documents in Adobe Acrobat instead of Internet Explorer; thus,
bypassing the controls altogether. To make this change, please
perform the following steps:
| Acrobat 5.0 |
- Drop down the Edit menu.
- Select Preferences.
- Select General Options.
- Select Options (this is not the same step as above)
- Deselect "Display PDF in Browser" by uncheckmarking the
appropriate box.
- PDF files that are downloaded will now open in Adobe Acrobat
instead of Internet Explorer. Depending on your version of IE, you
may also get a dialog box when you download a PDF file asking you
whether you want to open or save the document. This is normal.

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| Acrobat 6.0 & 7.0 |
- Drop down the Edit menu.
- Select Preferences.
- Select Internet.
- Deselect "Display PDF in Browser" by uncheckmarking the
appropriate box.
- PDF files that are downloaded will now open in Adobe Acrobat
instead of Internet Explorer. Depending on your version of IE, you
may also get a dialog box when you download a PDF file asking you
whether you want to open or save the document. This is normal.

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Please note: if you do not wish to change your settings in Adobe
Acrobat, you will need to uninstall the toolbar. For additional
instructions, please visit the Adobe Web site and reference the
following white paper.
http://www.adobe.com/support/techdocs/315029.html
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